<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h2 id="app"></h2>
  <input type="text" id="todo-input">
  <script src="https://lf3-cdn-tos.bytecdntp.com/cdn/expire-1-M/jquery/3.6.0/jquery.min.js"></script>
  <script>
  $('#todo-input').val('haha')
  </script>
</body>
</html>